Question

Since the ovary releases egg every month the uterus also prepares itself every month by making its lining thick and spongy. Give reason

Answer 1

Yes because if the egg is fertilised then the uterus also should be ready to hold the zygote in its walls.

Answer 2

Because if the egg is getting fertilised, then the uterus should be able to hold on to the fertilised egg during the gestation period.
Hence, the uterus makes its lining thick and spongy corresponding to the ovulation period.